Cop winding machine



Dec. 30, 1w.. scuwsnsnf 2,268,310

COP WINDING MACHINE Filed May 16, 1939 2 Sheets-Sheet 1.

Dec. 30, 1941. .w. SCHWEITER COP WINDING MACHINE Filed May 16, 1959 2 Sheets-Sheet 2 Patented Dec. 30, 1941 UNITED STATES PATENT OFFICE Application May 16, 1939, Serial No. 274,017 In Germany May 23, 1938 18 Claims.

This invention relates to cop winding machines in which the thread guide carries out the oscillating movement for the production of the cross winding and a control device is provided for the stepwise feeding of the thread guide according to the progress of the formation of the cop, said device being engaged and disengaged by a feeler bearing against the periphery of the bobbin.

The object of the invention is to provide an effective organization of this kind specially suited for full-automatic operation and for winding cops with a superior degree of uniformity, and affording various other advantages which will be herein made apparent.

An embodiment of the invention is illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a 'side elevation of a winding machine viewed in upward direction of Fig. 2, some of the parts being in longitudinal section,

Fig. 2 is a top plan view of Fig. 1,

Fig. 3 is a section through the thread guide carrier taken on line III-III of Fig. 1,

Fig. 4 is a side elevation viewed in downward direction of Fig. 2.

A spindle shaft I carrying at its front end a driver head 2, is journalled in a casing 3 and driven by a device not shown. The spindle shaft I carries a' worm wheel 4 which meshes with a worm wheel 5 and drives a cam cylinder 6 conneeted to the worm wheel 5. The cam cylinder 6 is keyed on a shaft 39 journalled in the casing 3. A fixed rod 7 is fastened to the casing 3 and carries on its front end a spindle or cop holder 8. This holder 8 carries a holder cup 3 which is rotatable in a sleeve 10, which sleeve is axially shiftable in the holder 8; The sleeve 10 bears displacement of this rod from the shaft l4 being adjustable by means of these nuts 2 I-24.

A thread guide carriage 25 is slidably mounted on the carrier rod 1 and has an arm 26 embracing the shaft I4 and. securing the carrier against rotation. A bolt 21 is rotatable in the thread guide carrier 25 and the thread guide 29 is fixed on the head 28 of this bolt 21. The bolt 21 carries on its lower end an arm 30 having a bifurcation 3| which embraces the swinging rod and is thus compelled to participatein the rocking movement of the rock shaft l4.

A bell crank lever 33 is oscillatable about a pin 32 on the thread guide carrier 25. A discshaped feeler 34 is rotatably mounted on the upwardly directed arm of lever 33 and secured by a lock ring 36 whereas the laterally directed arm of the lever 33 rests on a laterally movable rail against a compression spring H and can yield elastically when the winding spindle I2 is clamped between the driver head 2 and the cup 9. A pin I3 is fixed in sleeve ID on the one hand for pulling back the cup by hand for exchanging a bobbin and on the other hand for securing the sleeve l0 against rotation. The holder 8 has at its lower end a bearing l8 for a rock shaft [4. This shaft i4 which is also journalled in the casing 3, carries within the casing 3 a crank l5 on the free end of which a runner roller I6 is mounted rotatable about a pin l9. This runner roller l6 engages in a cam groove H in the cam cylinder 6 so that the shaft l4 carries out an oscillating movement corresponding to the shape of the cam groove IT. The ends of a rod 20 extend transversely through the shaft l4 and are secured 35. The rail 35 is disposed parallel to the path of movement of the thread guide carriage being fixed in levers 31 and 38 oscillatable about the carrier rod 1, the extended lever 38 carrying at one end a shiftable counterweight 40 secured in position by a set screw 49 and at the other end a set screw 4| with a lock nut 42. A lever 50 is oscillatable about a bolt 14 on the side of the casing 3 and oscillated by an eccentric pin 52 on the shaft 39. This lever 50 carries a feed arm 43 with a pawl 44 which cooperates with a ratchet wheel 45 rotatable about the stud 48 and rotates this wheel according to the oscillating movements of the lever 50. if the feed lever is not raised by the set screw 4|. A lever 59 pivoted on a stud 60 acts as a retaining pawl for the ratchet wheel 45 and looks it in one direction of rotation. The ratchet wheel 45 has a grooved drum 4! on which the cable 53 secured at one end to the ratchet wheel 45 is wound. This cable 53 extends from the hub 4'! around a pulley 54 mounted on the counter holder 8 to the thread guide carrier 25 to which it is clamped by a clamping screw 55 and a disc 56. The cable 53 passes from the thread guide carrier 25 around a guide pulley 51 mounted on the casing 3 and 5 then hangs down, carrying at its end a tensioning weight 58.

The device operates in the following manner:

The oscillating rod 20 which is actuated by the cam cylinder 6 through the intermediary of the lever l5 and the shaft l4, imparts an oscillating movement to the thread guide 29 through the intermediary of the bifurcated lever 30 and bolt 21 so that the running on thread BI is wound in cross winding on the rotating bobbin l2. The osin position by nuts 2|, 22, 23 and 24, the radial cillation of the thread guide is constant irrespective of the position of the thread guide carrier on the carrier rod 1, and is effected in exactly the same manner at the beginning as at the end of the winding process.

The length of the thread guide traverse can be varied as desired by changing the radial distance of the rod from the shaft [4 by means of the nuts -24.

In proportion to the formation of the winding bobbin the feeler 34 resting on the wound material yields in lateral direction depressing the sensitively balanced rail 35 and lever 38 with the result that the set screw 4! is moved downwards, so that the pawl 44 of the feed lever 43 can engage in the ratchet wheel 45 and rotate this wheel by several teeth. Thus, a portion of the cable 53 is wound on the grooved hub and the thread guide carrier secured to the cable is pulled forward a corresponding distance. During this movement the feeler 34 slides forwards on the conical portion of the winding bobbin 52 so that it moves at the same time nearer to the spindle I2. This movement causes the lifting of the rail 35 with the lever 38 and set screw 4|, which in turn raises the feed lever 43 so that the pawl 44 is no longer within the range of the ratchet wheel 45 and can no longer feed the same. As the bobbin 62 increases in size this whole feeding operation is repeated over and over again until the bobbin is finished. The rear conical formation of the bobbin is rendered possible by the fact that the rail 35 has at its rear end a shaper slope 53.

When the winding operation is terminated, the locking pawl 59 can be raised by hand or by a separate automatic device, so that the thread guide carrier is pulled back into its initial position under the action of the counterweight 58. With the aid of the counterweight 40 the feeler device can be set so that the feeler touches the winding bobbin very lightly and responds to every very small increase in size.

The adjusting screw ll intervenes between the end of the balanced lever 38 and the feed lever 43 and serves for adjusting the relation of the feeler to the carriage driving mechanism which enables the parts to be set with extreme sensitivity producing a smooth surfaced yarn mass on the cop, while the appropriate selection of the slope 53 for the rail 35 allows the contour of the wound mass, especially the base thereof, to be shaped as desired.

I claim:

1. In a cop winder of the kind having a thread guide carriage adapted to be propelled in a path parallel to the rotating cop'and provided with means to oscillate its thread-guide with respect to the carriage as it moves in such path, the improvement which comprises a feeler on said carriage and propelling mechanism for said carriage controlled by said feeler.

2. In a cop winder as defined in claim 1, the improvement which comprises a ratchet wheel for propelling said carriage, an oscillating drive pawl for the ratchet wheel and means whereby the ieeler on the carriage may cause and interrupt the pawl-drive of the ratchet.

3. A cop winder as defined by claim 1 wherein the control of the carriage that is effected by the feeler comprises a rail movably supported parallel to the carriage path, an arm on the feeler 4. A cop winder as defined by claim 1 wherein the mechanism comprises a laterally movable rail extending parallel to the carriage path and laterally moved by said feeler, said rail having a shaper slope for giving a predetermined contour to the yarn mass, and said carriage propelling mechanism being started and stopped as' the effect of the lateral movement of said rail.

5. A cop winder as defined in claim 1 wherein the mechanism comprises a laterally movable rail member supported on a counter-weighted lever and extending parallel to the carriage path, the feeler having a part which moves along or over said rail and is adapted to move it laterally against the counter-weighting force, said rail controlling the propelling mechanism.

6. A cop winder as defined in claim 1 wherein the mechanism comprises a laterally movable rail extending parallel to the winding axis and adapted to be laterally moved by the feeler, and the feeler has a wheel for contact with the wound mass, said rail being counterbalanced to reduce the pressure of the feeler wheel on the yarn, and adapted to control the propelling mechanism.

7. Amp winder comprising a casing suppering the winding spindle and containing the gearing to drive it and having a fixed support projecting therefrom, a holder for the tip of a cop mounted on said support, a thread-guide carriage movable along said support, a thread-guide mountedto oscillate on said carriage, a feeler on said carriage and means for propelling the carriage controlled by said feeler.

B. A cop winder as defined in claim 7 in which the carriage-propelling means comprises a cable or the like attached to the carriage and propelled by a ratchet wheel against a counter force, and means for releasing the cable to allow said force to return the carriage to a place of beginning.

9. A cop winder comprising a casing supportthe winding spindle and containing the drive gear therefor, and having a fixed support projecting externally therefrom, a holder for the end of a cop mounted on said support, a thread-guide carriage movable along said support, an oscillating thread-guide on said car iage, a rock shaft for actuating said guide. a feeler on said carriage and means for propelling the carriage along said support controlled by said feeler.

10. In a cop winding machinev a driving spindle for supporting and rotating a cop, a threadguide carriage, a fixed rod adjacent said cop for movably supporting said carriage, a thread guide oscillatably mounted on said carriage. means for oscillating said thread guide, a yarn feeler. a support for same pivotally mounted on said carriage, mechanism effective to advance said carriage along said fixed rod, and means responsive to a predetermined size of yarn mass on the cop for energizing said mechanism.

11. A cop winder comprising a casing supporting the winding spindle and containing the gearing to drive it and having a fixed support projecting therefrom, the free end of said support being provided with a tail-stock part adapted to hold the end of a cop, a thread-guide carriage movable along said support, a thread-guide osadapted to move said rail, and carriage propelling mechanism arranged to be stopped and started as the effect of change of position 01 said rail.

cillatably mounted on the carriage, a rock shaft journalled on said casing and in said tail stock part connected to operate said thread-guide, and a feeler moving with said carriage having means to control the thread-guide carriage movement.

12. A cop winder comprising a casing supporting the winding spindle and containing the gearing to drive it, said gearing including a cam shaft and cam, a thread-guide carriage having an oscillating thread-guide, a rock shaft alongside the spindle operated by said cam to oscillate the thread-guide on said carriage, and means supported on the outside 01 said casing and driven by said cam shaft for imparting movement to the thread-guide carriage.

13. A cop winder comprising a casing supporting the winding spindle and containing the gearing to drive it, and having a fixed support projecting therefrom with a holder for the tip of a cop mounted thereon, a thread-guide carriage mounted to travel on or parallel to said support, means for imparting intermittent advancin movement to the carriage toward the tip the cop and against a counteriorce, said means comprising a ratchet wheel connected to operate said carriage, a reciprocating pawl to advance said ratchet wheel and means for locking said wheel in its successive positions 01' advance and for releasing it to allow its return under the influence of said counterforce.

14. A cop winder comprising a casing supporting the winding spindle and containing the gearing to drive it, and having a fixed support projecting therefrom with a holder for the tip of a cop mounted thereon, a thread-guide carriage mounted to travel on or parallel to said support, an oscillating thread-guide on the carriage, means for imparting intermittent advancing movement to the carriage toward the tip of the cop and against a counteriorce, means for looking the carriage in its successive positions of advance and for releasing it to allow its return under the influence of said counteriorce, and a rockshait extending alongside said support for oscillating said thread-guide during the advance of said carriage.

15. A cop winder comprising a casing supporting the winding spindle and containing the gearing to drive it and having a fixed support pro- Jecting therefrom, a holder for the tip of a cop mounted on said support, said gearing including a cam ,shaft and cam, a rock shaft extending alongside the spindle, and oscillated by said cam,

a thread-guide carriage movable along said support and carrying a thread-guide oscillated by said rock shaft, a feeler on said carriage, and means on the cam shaft for propelling the carriage controlled by said feeler.

16. In a cop winder as defined in claim 1, the improvement which consists of a wheel or disc idly rotatable on the feeler whereby it contacts the yarn mass on the spindle.

17. In a cop winder, a winding spindle, a thread-guide carriage, driving means for moving said carriage parallel to the spindle, an oscillating yarn-guide on the carriage adapted to lay a cross-wind, a pivoted feeler moving with the carriage and means whereby said Ieeler may cause and interrupt the drive of said carriagedriving means, comprising an adjustably balanced lever, and an arm on said feeler for changing the position of said lever in accordance with the growth of the yarn mass on the cop.

18. In a cop winder, a winding spindle, a thread-guide carriage, driving means for moving said carriage parallel to the spindle, an oscillating yarn-guide on the carriage adapted to lay a cross-wind, a pivoted feeier moving with the carriage to be engaged by the wound yarn and means whereby said feeler may cause and interrupt the drive of said carriage-driving means comprising an adjustably balanced member subject to actuation by the movement of said feeler and an adjusting screw intervening between said balanced member and said driving means adapted for'changing the operating relation of the feeler to said means.

WALTER SCHWEITER. 

